← Vulnerability feed

Vulnerability record · CVE-2026-69197 · published 17 September 2026

CVE-2026-69197: Information exposure vulnerability

Umbraco is an ASP.NET CMS. Prior to 13.15.1, 17.5.3, and 18.0.2, the Content Delivery API applies member and Public Access checks to the directly requested node but not to referenced nodes serialized through Content Picker or Multi-Node Tree Picker properties, including pickers nested in Block List, Block Grid, or Rich Text Editor blocks. When DeliveryApi:PublicAccess is enabled, an anonymous caller can retrieve a protected node's name, route, and id through an unprotected referencing node and use ?expand to retrieve full property values. When the Delivery API is instead gated by the organization-wide API key, a key holder can still bypass per-node Public Access through the same expansion path. The same RequestContextOutputExpansionStrategyV2 and ElementOnlyOutputExpansionStrategy path also bypasses allowed or disallowed content-type alias restrictions for referenced content. Direct requests for the protected node still return 401, and no integrity or availability impact is established. This issue is fixed in versions 13.15.1, 17.5.3, and 18.0.2.

8.7 CVSS 4.0 High EPSS 0.66% · top 50.3% CWE-200 · Information exposureCWE-862 · Missing authorization Received
8.7CVSS 4.0 base score
0.66%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
17 Sep 2026Last modified by NVD

Description

Umbraco is an ASP.NET CMS. Prior to 13.15.1, 17.5.3, and 18.0.2, the Content Delivery API applies member and Public Access checks to the directly requested node but not to referenced nodes serialized through Content Picker or Multi-Node Tree Picker properties, including pickers nested in Block List, Block Grid, or Rich Text Editor blocks. When DeliveryApi:PublicAccess is enabled, an anonymous caller can retrieve a protected node's name, route, and id through an unprotected referencing node and use ?expand to retrieve full property values. When the Delivery API is instead gated by the organization-wide API key, a key holder can still bypass per-node Public Access through the same expansion path. The same RequestContextOutputExpansionStrategyV2 and ElementOnlyOutputExpansionStrategy path also bypasses allowed or disallowed content-type alias restrictions for referenced content. Direct requests for the protected node still return 401, and no integrity or availability impact is established. This issue is fixed in versions 13.15.1, 17.5.3, and 18.0.2.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/umbraco/Umbraco-CMS/commit/26312a3f717a0f33bb3d7d28b14bef3592bdb0fe
https://github.com/umbraco/Umbraco-CMS/commit/5360e2a9681ce2d0024be374e80339260bcc2511
https://github.com/umbraco/Umbraco-CMS/commit/a9649da4e5a0786db7688bd6b5036a21df26b015
https://github.com/umbraco/Umbraco-CMS/releases/tag/release-13.15.1
https://github.com/umbraco/Umbraco-CMS/releases/tag/release-17.5.3
https://github.com/umbraco/Umbraco-CMS/releases/tag/release-18.0.2
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wr57-hqmp-fgvh

Track CVE-2026-69197 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

5.9CVE-2025-68686FortiOS symbolic link patch bypass exposes sensitive informationFortiOS contains an information exposure flaw (CWE-200) that lets a remote unauthenticated attacker bypass the patch for the symbolic link persistenc…KEVEPSS 30%analysed7.5CVE-2026-20133Cisco Catalyst SD-WAN Manager insufficient file system restrictions expose dataCisco Catalyst SD-WAN Software has insufficient file system restrictions that let an attacker read sensitive files on the underlying operating system…KEVEPSS 32%analysed7.5CVE-2025-31125Vite dev server improper access control exposes arbitrary filesVite's dev server fails to restrict file access when a request uses the ?inline&import or ?raw?import query patterns, allowing content of files that …KEVEPSS 65%analysed5.5CVE-2026-20805Windows Desktop Window Manager information disclosureDesktop Windows Manager (DWM) in Microsoft Windows exposes sensitive information to an unauthorized actor, allowing a local attacker with existing ac…KEVEPSS 7.2%analysed7.5CVE-2021-41277Metabase custom GeoJSON map feature allows local file inclusionMetabase does not validate URLs supplied through the custom GeoJSON map setting (admin->settings->maps->custom maps->add a map) before loading them. …KEVEPSS 97%analysed8.6CVE-2024-24919Check Point Security Gateway information disclosure via remote access VPNCheck Point Security Gateways with Remote Access VPN or Mobile Access Software Blades enabled expose information to an unauthenticated attacker reach…KEVEPSS 100%analysed5.5CVE-2023-21237Android notification UI flaw hides foreground service alertsIn applyRemoteView of NotificationContentInflater.java, Android 13 mishandles notification UI so a foreground service notification can be hidden. The…KEVEPSS 0.27%analysed7.5CVE-2020-3259Cisco ASA and FTD web services memory disclosure via crafted URLCisco ASA and FTD web services interfaces mishandle buffer tracking when parsing invalid URLs, allowing memory contents to be read. The flaw affects …KEVEPSS 72%analysed

Source: NIST National Vulnerability Database (record CVE-2026-69197), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.